Mohammed, had been arrested in his school for bringing a homemade clock to school which authorities thought were a bomb.

Richard Dawkins, British evolutionary biologist, took to Twitter to further criticise Ahmed Mohammed, the "clock boy" who had an audience with US President Barack Obama, comparing him to the Isis child executioner.

The 14-year-old boy, Mohammed, had been arrested in his school in Irving, Texas for bringing a homemade clock to school which authorities thought was a bomb.

He was, later, honoured by Google and visited the White House after being invited by the President.

The scientist, Dawkins, reacting to Mohammed's family's demand for $15 million as damages and apology from the Texas government, took to Twitter calling him a "hoax boy" who ""hoaxed his way into the White House."

Don't call him "clock boy" since he never made a clock. Hoax Boy, having hoaxed his way into the White House, now wants $15M in addition!

This was not the first time that the scientist had expressed his disapprobation about the child who called the clock his invention, reports Time. Judging the attempt of a 14-year-old, who was tinkering with science, he had said:

If the reassembled components did something more than the original clock, that's creative. If not, it looks like hoax http://t.co/bBcaWoJpbd